高电压技术2016，Vol.42Issue(3)：739-744,6.DOI:10.13336/j.1003-6520.hve.20160308004
阳极自冷却高效等离子体束流源
High Efficient Plasma Torch with Self-cooling Anode
摘要
Abstract
We developed a plasma torch with self-cooling anode.The anode was cooled by forcing the working medium to flow through the intemal of the anode, and the temperature of working gas would simultaneously increase by absorbing heat from the high-temperature anode.The heated gas then flowed into the discharging channel, and a stable plasma jet was obtained.The new plasma torch was tested with total input power at 785 W, under atmospheric pressure without water-cooling, and it could work stably in long-standing period.The length of the jet does not change notably, and the anode keeps a temperature at about 395 ℃.A traditional torch was also tested for comparison with 815W input power without water-cooling.The temperature of the normal torch increases to 750 ℃ and shuts down after 5-minute operation in the air.The length of the plasma jet from a normal torch exhibits a quasi-period variation, observed by neck eyes clearly.The experimental results show that the self-cooling anode is an efficient way to achieve a stable plasma jet, and to increase the length, temperature and enthalpy of the jet.Self-cooling anode is a useful technique to improve the efficiency and quality of a plasma torch.关键词
稳态电弧放电/层流等离子体源/阳极自冷却/高效等离子体炬/无水冷却模式Key words
steady-state arc discharge/laminar plasma source/self-cooling anode/high efficient plasma torch/non-water-cooling operation引用本文复制引用
任琼英,李露,丁亮,黄佳华,唐振宇,赵华..阳极自冷却高效等离子体束流源[J].高电压技术,2016,42(3):739-744,6.基金项目
国家航天预研基金(9140A12060514HT05187) （9140A12060514HT05187）
国家高技术研究发展计划(863计划)(2014AA7024030).Project supported by National Aerospace Innovative Research Foundation of China (9140A12060514HT05187), National High-tech Research and Development Program of China (863 Program)(2014AA7024030). （863计划）
